Senior politicians are calling for the Metropolitan Police to reopen its investigation into illegal phone hacking by journalists.
The call comes in the wake of allegations that prominent public figures, including Gordon Brown, may have been targeted.
It has emerged that Mr Brown wrote to Scotland Yard over the summer after he was concerned that his voicemail messages had been broken into.
Last week, former News of the World editor Andy Coulson resigned as David Cameron’s director of communications after continuing allegations of phone hacking by reporters while he was editor.
The investigation into allegations against the News of the World was formally closed by Scotland Yard last month.
However, a number of public figures are continuing to pursue civil legal actions against both the newspaper and the police, prompting a series of fresh disclosures.
Senior politicians from the Government and opposition are now calling on police to reopen the investigation.
Labour deputy leader Harriet Harman said the law must be enforced, while the Lib Dem Energy Secretary Chris Huhne said it was "implausible" to claim the practice was confined to "one rogue reporter" at the News of the World.
Earlier this month, the Met announced that it was passing all its evidence to the Director of Public Prosecutions Keir Starmer for lawyers at the Crown Prosecution Service to review.